JAMB Biology Past Questions & CBT Practice

Total salt content in blood is about

1. A.1.85 to 1.9%
2. B.11.85 to 11.9%
3. C.2.85 to 2.9%✓ Correct
4. D.0.85 to 0.9%

The part of the brain responsible for peristalsis is the

1. A.Olfactory Lobe
2. B.Medulla Oblongata
3. C.Hypothallamus
4. D.Thalamus✓ Correct

The frequent value that occurs most in a data is

1. A.median✓ Correct
2. B.mean
3. C.mode
4. D.range

The demand for two or more commodities to satisfy a particular want is _____?

1. A.Derived
2. B.Composite
3. C.Competitive
4. D.Joint✓ Correct

In Faradays law of electrolysis, a graph of the mass deposited against the quantity of electricity is plotted. The slope of the graph gives?

1. A.the energy released
2. B.the electrochemical equivalent✓ Correct
3. C.the current flowing
4. D.the charge released

Which of the following could not be alkane?

1. A.C$_4$H$_{10}$
2. B.C$_5$H$_{12}$
3. C.C$_7$H$_{14}$✓ Correct
4. D.C$_8$H$_{18}$

The male reproductive organ of a flower is the

1. A.carpel
2. B.stamen
3. C.petal✓ Correct
4. D.sepal

Ọlee the "one million" pụtara n'asụsụ Igbo?

1. A.A. Ọtụ nde
2. B.B. Ọtụ narị
3. C.C. Iri
4. D.D. Ọtụ puku✓ Correct

Ana m eri nri

1. A.A. We were eating
2. B.B. I am dancing for food
3. C.C. They are eating food
4. D.D. I am eating food✓ Correct

If the mean of 2, 5, (x+1), (x+2), 7 and 9 is 6. Find the median

1. A.5.5✓ Correct
2. B.5
3. C.6.5
4. D.6